88 lines
2.2 KiB
C++
88 lines
2.2 KiB
C++
#ifndef QUERY_RECORD_HPP
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#define QUERY_RECORD_HPP
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#include "matador/utils/access.hpp"
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#include "matador/sql/column_definition.hpp"
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#include <vector>
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#include <unordered_map>
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namespace matador::sql {
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struct column;
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class record
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{
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private:
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using column_by_index = std::vector<column_definition>;
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using column_index_pair = std::pair<std::reference_wrapper<column_definition>, size_t>;
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using column_by_name_map = std::unordered_map<std::string, column_index_pair>;
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public:
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using iterator = column_by_index::iterator;
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using const_iterator = column_by_index::const_iterator;
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record() = default;
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record(std::initializer_list<column_definition> columns);
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explicit record(const std::vector<column_definition> &columns);
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record(const record &x);
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record& operator=(const record &x);
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record(record&&) noexcept = default;
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record& operator=(record&&) noexcept = default;
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~record() = default;
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template<class Operator>
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void process(Operator &op)
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{
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for(auto &col : columns_) {
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col.process(op);
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}
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}
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template < typename Type >
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void append(const std::string &name, long size = -1)
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{
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append(make_column<Type>(name, size));
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}
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void append(column_definition col);
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[[nodiscard]] bool has_primary_key() const;
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[[nodiscard]] std::optional<column_definition> primary_key() const;
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[[nodiscard]] const std::vector<column_definition>& columns() const;
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[[nodiscard]] const column_definition& at(const column &col) const;
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[[nodiscard]] const column_definition& at(size_t index) const;
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iterator find(const std::string &column_name);
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[[nodiscard]] const_iterator find(const std::string &column_name) const;
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iterator begin();
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[[nodiscard]] const_iterator begin() const;
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[[nodiscard]] const_iterator cbegin() const;
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iterator end();
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[[nodiscard]] const_iterator end() const;
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[[nodiscard]] const_iterator cend() const;
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[[nodiscard]] size_t size() const;
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[[nodiscard]] bool empty() const;
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void clear();
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[[nodiscard]] bool unknown() const;
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private:
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void init();
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void add_to_map(column_definition &col, size_t index);
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private:
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column_by_index columns_;
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column_by_name_map columns_by_name_;
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int pk_index_{-1};
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};
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}
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#endif //QUERY_RECORD_HPP
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